PostgreSQL Requirements

PostgreSQL is the only supported database. Using a remote PostgreSQL database or remote file systems (such as NFS) with the PostgreSQL database is not supported. In other words, PostgreSQL should be on the fastest available storage device for Uyuni.

Additional background information:

Because of potential performance issues, running a PostgreSQL database remotely from Uyuni is discouraged in general. While it does work and is stable in many cases, there is always a risk of data loss if something goes wrong.